Home / 28,653,619.20-42,980,428.80-9,742,387.20

Finding the Fourth Proportional to 28,653,619.20, 42,980,428.80 and 9,742,387.20

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Solution

The fourth proportional to 28,653,619.20, 42,980,428.80 and 9,742,387.20 is: 14,613,580.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,653,619.20 : 42,980,428.80 = 9,742,387.20 : x
  2. Step 2: Convert to fraction form
    28,653,619.20/42,980,428.80 = 9,742,387.20/x
  3. Step 3: Cross multiply
    28,653,619.20x = 42,980,428.80 × 9,742,387.20
  4. Step 4: Simplify right side
    28,653,619.20x = 418,731,979,391,631.31
  5. Step 5: Solve for x
    x = 418,731,979,391,631.31/28,653,619.20
  6. Step 6: Final answer
    x = 14,613,580.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.